Are you using a v21 viewer?
To the best of my knowledge, the SII is a smartphone and not a tablet device, and the official claim is (correct me if I'm wrong) that DPS on Android is corrently tablet only.
Anyway, it seems strange to me so checked and found out that even though the DPS apps are not available when you search for them in the Play Market of a smartphone you can still force load them to the phone and run them.
I've done it on both a Samsung SIII running Android 4.0.4 and a Samsung GT-I9070 running Android 2.3.6 (I currently don't have a device running Android 3.2)
The interface is so small that it's hardly possible to use it, but it works.